Process of plating.



LUGIAN w. nuennn, or sou'rnnnmcn. imssncnusnr'rs, nssreuon 'ro jnnicauf.

or'rrcnn comm, or SOUTHBRIDGE, ranssaonusn'rzrs', A'VOLUNTY ASS001A- r101: or MASSACHUSETTS. Y

rnocnss or rn'a'rmel 1,214,271. Specification, Lemrflatent Patented dan.3@, 391?. NoJJrawing. Application med December 4,1916. S eria1No 134,870.-

To all whom it may concern:. 7 number of ways, all of which I consider as Be it known that 1,,LUCIAN Bucnnn, falling within the cope of myinventiomand': a citizen of the United States, residing at among'which might be mentioned the placing Southbridge, in the county of- Worcester within the plating bath of afblastor spraying and State of Massachusetts, have invented device operating on the surface to'be plated so certain new and useful Improvements in or coated; the employment ofascratchbrush Processes of Plating, of which the following or similar device, the article and brush beis a specification. 1 ingmoved relative to eachother to abrade v My invention relates to an improved procthe article being plated,or the iplacing in the 10 ess of plating metallic articles, and has'parplating bath and surrounding the article, of "165 ticular reference to the plating of. alumisand orother abrasive substance, thearticle numby electrodeposition or otherwise, this to be plated, being moved uppand down in" applicationbeing a continuation inpartof said substance, 'while within the. plating my prior application Serial No. 808,152 bath, the said substance thus, by this abra- 5 which was filed December 22, 1913. sive action, brealn'ng up the oxid film and Up to the present time difiiculty' has been '1 allowing satisfactory plati nglof the article. uniformly experienced in attempting to sat- -While any-desired methodof causing the v isfactorily plate aluminum, on account of the depositing of the plating 'on the'article may fact. that aluminum having an aflinity for be employed, I preferably couple-the article '2 oxygen and dueto chemical action in the {witha source of.electrical' SuPPly and einplating bath rapidly oxidizes or forms a film ploy my process in connection with "any cuson its surfae, to which a plating orcoating tomary electroplating apparatus. will not securely adhere, and consequently 1 I claim: plating hitherto produced on aluminum- 1. The process ofplating aluminum, con-" 25 would either peel or tub ofi and would not sisting in submerging the aluminum article be a permanent matter. I i in a'plating bath and simultaneouslysub- 1 It is the object of my improved process to 'jecting the article to, a plating action and to overcome this difiiculty and thus permit of an abrasive blast, substantially as described. there'ady and satisfactory plating of alumi 2. The process of electro-plating, consist- 3o num articles. It will be understood how{ ing in submerging the article to be plated in. '85 ever, that while particularly adapted or use a platingfbath, coupling thearticle with ain the plating of aluminum, my process may source of electrical energy and directingv an also be very satisfactorily employed in conabrasive spray through the bath onto the a'rnection with the plating of other Substances. 'ticle during the plating action. I

35. Briefly stated, my process consists in the 3. The process of plating an article, conimmersion of the article to be plated in the sisting in subjecting thearticle to a" plating plating bath or solution and at the outset action and directing an abrasive spray subjecting the article to a simultaneous against the article during a portion at least abrading and lating action, which abradef the plating. t

40 ing action shal initially be as great or e 4. Theprocess of platmgan article, congreater than the plating action, whereby the sisting in submergmg the article "m a platsurface to be plated is thoroughly abraded, 111g bath, l1 Ct111g the; article to a plating freed from hydrogen or other bubbles, and act1on,--abrad1ng the article durmg the early a chemically clean Surface which will receive stages of the plating action, and Stopping 45 a plate secured, Subsequent to which the the abrasion before the platmg action '18 abrading action is decreased or the plating completed. k action increased until the plating action be: 5. The'process of plating an article, concomes equal to and subsequently greater than sisting in subjecting the article to a'plating the abrading action, and ultimately ceasing action, and variably'abrading the article, 7

50 the abrading action after the article has the initial rate of abrasion being greater than been thoroughly covered with a film or plate and the final rate of abrasion being considtoeliminate abrasion of the plate, while conerably less than the rate of plating, substantinuing the plating action till the desired tially as and for the purpose described. thickness of plate has been obtained. 6. The process of plating aluminum, 0011- 55 The result referred to may be attained in a ,sisting in submerging the article to be plated 11c in a plating bath, subjecting the article to be plated to a plating action and to a pronounced abrading action, and relatively varying the rates of plating and abrading action, the initial abrading action belng greater and the final abrading action being considerably less than the plating action;

7. The process of plating an article, consisting in submerging the article in a plating bath,'directing an abrasive spray against the article to clean the surface of the article, and subjecting the article to a plating action, the force of the spray being initially sufficient to .more than counterbalance the plating effect and to slightly cut away the surface to be lated, and the abrading action being graciizally reduced to maintain the surface properly clean and allow a plate. to

- .be gradually formed thereon.

8. The process of plating an article, consisting in submerging the article in a plating bath, directing an abrasive spray against the article to clean the surface of the article, and subjecting the article to a plating action, the force of the spray being initially suflicient to. more than counterbalance the.

plating efiect and to slightly cut away the surface to be plated, and the abrading'action being gradually reduced to maintain the surface properly clean and allow a plate to be gradually formed thereon, and finally stopping the abrasive action while continuing the plating action aftera skin has been formed on the article to be lated.

In testimony whereof I ax in the presence of two witnesses.

. v LUGIAN W. BUGBEE. Witnessesv p H. H. S'rm, H. R. PARsoNs.

my signature 

